Which would hold more water a teaspoon or a milliliter?

A teaspoon is a unit of measurement that is usually used for the quantities of substances utilized during cooking. To compare which among the two unit of measurement will hold more water, we are to convert these measurement to a common one. For easy calculation, we convert the teaspoon to millimeters. 

From reliable source, the number of millimeters in a teaspoon is 5. Five millimeters is obviously more than 1 millimeter. Hence, the answer is that a teaspoon will be able to hold more volume of water.